81060376539 has 8 divisors (see below), whose sum is σ = 108421451280. Its totient is φ = 53869776416.

The previous prime is 81060376469. The next prime is 81060376547. The reversal of 81060376539 is 93567306018.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81060376539 - 2¹⁷ = 81060245467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81060376139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42617544 + ... + 42619445.

It is an arithmetic number, because the mean of its divisors is an integer number (13552681410).

Almost surely, 2^81060376539 is an apocalyptic number.

81060376539 is a deficient number, since it is larger than the sum of its proper divisors (27361074741).

81060376539 is a wasteful number, since it uses less digits than its factorization.

81060376539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85237309.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 81060376539 in words is "eighty-one billion, sixty million, three hundred seventy-six thousand, five hundred thirty-nine".